21114741 has 4 divisors (see below), whose sum is σ = 28152992. Its totient is φ = 14076492.

The previous prime is 21114727. The next prime is 21114749. The reversal of 21114741 is 14741112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 21114741 - 2⁹ = 21114229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21114749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3519121 + ... + 3519126.

It is an arithmetic number, because the mean of its divisors is an integer number (7038248).

Almost surely, 2^21114741 is an apocalyptic number.

It is an amenable number.

21114741 is a deficient number, since it is larger than the sum of its proper divisors (7038251).

21114741 is an equidigital number, since it uses as much as digits as its factorization.

21114741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7038250.

The product of its digits is 224, while the sum is 21.

The square root of 21114741 is about 4595.0779101121. The cubic root of 21114741 is about 276.3939841672.

Adding to 21114741 its reverse (14741112), we get a palindrome (35855853).

The spelling of 21114741 in words is "twenty-one million, one hundred fourteen thousand, seven hundred forty-one".